Deep RATAN-600 surveys at the declination of SS 433 carried out in 1987–2000 at 7.6 and 2.7 cm |
| |
| Authors: | N S Soboleva N N Bursov A V Temirova |
| |
| Institution: | (1) St. Petersburg Division, Special Astrophysical Observatory, St. Petersburg, Russia;(2) Special Astrophysical Observatory, Nizhniĭ Arkhyz, Russia |
| |
| Abstract: | We discuss the results of deep surveys of a ±10′ strip of the sky, centered on the declination of SS 433, carried out on the Northern sector of the RATAN-600 telescope at 2.7 and 7.6 cm in 1987–2000. The survey objects are cross-identified with sources in the NVSS catalog and the corresponding two-frequency spectral indices determined. We find a decrease in the mean spectral index in the transition from objects with flux densities S 21 ≥ 30 mJy to those with 15 < S 21 < 30 mJy. The constructed log N — logS relation at 2.7 cm has a slope of 3/2 at flux densities ≥300 mJy and flattens at weaker flux densities. The 1.4 GHz (NVSS), 3.94 GHz (RATAN-600), and 11.11 GHz (RATAN-600) data are used to estimate the number of objects per square degree at a wavelength of 1 cm. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
